Breather valve testing device

Abstract

The utility model relates to a breather valve testing device which comprises a testing cylinder, a vacuum pressure gauge, a breather valve and a breather valve are arranged at the top of the testing cylinder, the bottom end of a water injection pipe is connected with the bottom of the side wall of the testing cylinder, the top end of the water injection pipe is connected with a water injection funnel, a discharge pipe is arranged at the bottom of the testing cylinder, and a discharge valve is installed on the discharge pipe. The device is simple in structure, reliable, safe, low in cost, convenient to operate and capable of testing the breather valve.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a breathing valve testing device. Background Art

[0002] During the voyage of a liquid cargo ship, the oil and gas pressure in the tank will fluctuate due to temperature changes. To prevent overpressure or ultra-vacuum in the cargo oil tank, each liquid cargo tank needs to be equipped with a breather valve. The stable operation of the breather valve is crucial to the safety of the liquid cargo tank, so the breather valve needs to be tested regularly. Summary of the invention

[0003] The utility model aims to overcome the above-mentioned shortcomings and provides a breathing valve testing device which has a simple structure and is easy to install and achieves the testing purpose through simple physical means.

[0004] The purpose of the utility model is achieved in this way:

[0005] A breathing valve testing device comprises a testing cylinder, wherein a vacuum pressure gauge, a breathable valve and a breathing valve are arranged on the top of the testing cylinder, the bottom end of a water injection pipe is connected to the bottom of a side wall of the testing cylinder, and the top end is connected to a water injection funnel, a discharge pipe is arranged at the bottom of the testing cylinder, and a discharge valve is installed on the discharge pipe.

[0006] Preferably, the test cylinder is provided with a breathing valve mounting seat plate corresponding to the breathing valve, and the breathing valve and the breathing valve mounting seat plate are connected by bolts.

[0007] Preferably, the water injection funnel is higher than the test cylinder.

[0008] Preferably, the water injection funnel is 2.5-2.8 m higher than the test cylinder.

[0009] Preferably, the test cylinder is equipped with a liquid level gauge.

[0010] Preferably, when performing a pressure test on the pressure side of the breathing valve, the vent valve and the relief valve are closed.

[0011] Preferably, when performing a vacuum side pressure test on the breathing valve, first open the air valve and close the relief valve; after the water level is filled, close the air valve and open the relief valve.

[0012] The beneficial effects of the utility model are:

[0013] The utility model has the advantages of simple structure, reliability, safety, low cost and convenient operation, and realizes the test of the breathing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Among them: test cylinder 1; breathing valve mounting base plate 1.1; breathing valve 2; water injection funnel 3; water injection pipe 4; vacuum pressure gauge 5; air vent 6; discharge pipe 7; discharge valve 8; liquid level meter 9. Implementation

[0016] See also Figure 1 The utility model relates to a breathing valve testing device, comprising a test cylinder 1, a breathing valve 2, a water injection funnel 3, a water injection pipe 4, a vacuum pressure gauge 5, a breathable valve 6 and a discharge pipe 7. The top of the test cylinder 1 is provided with a vacuum pressure gauge 5, a breathable valve 6 and a breathing valve 2. The test cylinder 1 is provided with a breathing valve mounting seat plate 1.1 corresponding to the breathing valve 2. The breathing valve 2 is connected to the breathing valve mounting seat plate 1.1 by bolts. The bottom end of the water injection pipe 4 is connected to the bottom of the side wall of the test cylinder 1, and the top end is connected to the water injection funnel 3. The water injection funnel 3 is higher than the test cylinder 1, with a height of 2.5-2.8m. The bottom of the test cylinder 1 is provided with a discharge pipe 7, and a discharge valve 8 is installed on the discharge pipe 7. The test cylinder 1 is equipped with a liquid level meter 9, and the liquid level in the test cylinder 1 is observed by the liquid level meter. Example 1

[0017] Taking the 50000MR tanker as an example, the set pressure of the cargo tank breathing valve is: 0.2 bar for pressure measurement and -0.07 bar for vacuum measurement.

[0018] (1) Pressure test on the pressure side of the breathing valve:

[0019] Install the breathing valve 2 on the test cylinder 1, install the water injection pipe 4 and the water injection funnel 3, and the water injection funnel 3 is about 2.5m higher than the test cylinder 1. Close the breathable valve 6 and the discharge valve 8, and inject water into the test cylinder 1 through the injection funnel 3. As the water level in the test cylinder 1 increases, the air above the test cylinder is compressed and the pressure continues to rise. When the pressure side of the breathing valve starts to jump, record the vacuum pressure gauge pressure, which is the set pressure on the pressure side of the breathing valve.

[0020] (2) Pressure test on the vacuum side of the breathing valve:

[0021] Install the breathing valve 2 on the test cylinder 1, install the water injection pipe 4 and the water injection funnel 3, open the air valve 6 on the top of the test cylinder 1, close the discharge valve 8 at the bottom of the test cylinder 1, fill the test cylinder 1 with water, and the liquid level can be observed through the liquid level gauge installed on the cylinder. After the water level is filled, close the air valve 6 and open the discharge valve 8. As the water level in the test cylinder 1 continues to drop, a vacuum will be generated above the liquid surface. When the vacuum side of the breathing valve starts to jump, record the vacuum pressure gauge pressure. This pressure is the set pressure of the vacuum side of the breathing valve.

[0022] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A breathing valve testing device, characterized in that: It includes a test cylinder, the top of which is provided with a vacuum pressure gauge, a vent valve and a breathing valve, the bottom end of the water injection pipe is connected to the bottom of the side wall of the test cylinder, and the top end is connected to the water injection funnel, the bottom of the test cylinder is provided with a discharge pipe, and the discharge pipe is installed with a discharge valve.

2. A breathing valve testing device according to claim 1, characterized in that: The test cylinder is provided with a breathing valve mounting seat plate corresponding to the breathing valve, and the breathing valve is connected to the breathing valve mounting seat plate by bolts.

3. A breathing valve testing device according to claim 1, characterized in that: The water injection funnel is higher than the test cylinder.

4. A breathing valve testing device according to claim 3, characterized in that: The water injection funnel is 2.5-2.8m higher than the test cylinder.

5. A breathing valve testing device according to claim 1, characterized in that: The test cylinder is equipped with a liquid level gauge.

6. A breathing valve testing device according to claim 1, characterized in that: When performing a pressure test on the pressure side of the breathing valve, close the breather valve and the relief valve.

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